CCD optical touchscreens leverage CCD touch technology to overcome the limitations of existing touch technologies, significantly improving accuracy, response speed, and lifespan. The 2 CCD cameras installed at the top corners can precisely detect the positions of multiple fingers, allowing for single taps, dragging, free rotation, and zooming of images, all dependent on the number of fingers and area per unit. Users can also enjoy the fun of controlling 3D object movements and interacting with virtual animals on the screen through light touch. The innovation in digital signage technology, through the integration of hardware and software advancements, provides detailed content introductions, delivering direct impact to customers at the right time and place. For instance, placing screens next to product displays, in restaurants for direct ordering, or in customer waiting areas for advertising. Moreover, personalized experience services and interactive touch screen information releases for outdoor large-scale events and shelf displays are emerging trends in digital signage.
Interactive large-scale touch screens come in various forms, utilizing computer vision technology to capture and recognize finger positions on the screen. Specific algorithms convert physical coordinates on the screen to logical coordinates and control commands on the computer screen, enabling touch and annotation functions on the large screen. This achieves natural human-computer interaction, breaking free from the constraints of small-size touch screens. Interactive content creation and large-screen touch frames can also achieve interactive touch effects.
The CCD camera installed at the top left corner emits light through an LED, which is reflected by the surrounding reflective strips and enters the CCD camera at the top right corner. Similarly, light emitted by the CCD camera at the top right corner is passed to the CCD camera on the left. The dense light forms a network within the touch area, with the space between the reflected light beams being less than 1mm. When a point is touched, the emitted and received light at that point form an angle, while the straight lines connecting the two CCD cameras with these light beams form two more angles. The precise coordinates of the point are recorded by the controller, enabling the touch response.
Touchscreens are a crucial component for human-computer interaction in navigation devices, necessitating the design of a new touchscreen mounting assembly. The touchscreen uses capacitive touch chips for touch functionality and must meet high-experience requirements for stability, sensitivity, power consumption, response speed, waterproofing, operation with water, vibration resistance, and electromagnetic interference resistance in complex applications.
